Pilgrimage site for star-crossed lovers.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

Small on the outside, big on the inside, this church is an astonishing act of visual deception.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

A working model of the entire San Francisco Bay and much of the Sacramento River Delta, complete with regular tides that change every 14 minutes.

Putrefaction plateaus in Iran, where the dead were sent for decontamination before going to their final resting place.

17th century mosque for Shah Abbas' harem.

The palace of the King of Kings, burned by Alexander the Great.

Marked by the hand of the explorer Henry Morton Stanley.

This ancient burial site is believed to be one of the first earthquake-protected structures in the world.

This beautiful system of tunnels built into natural rock serves as a centuries old plumbing system.

Burial site of a Jewish prophet revered in Iran.

Ethiopian standing stones featuring remarkably preserved carvings of swords and people.

An ancient Ethiopian cave church is endangered by the simple building of a road.

An Ethiopian "Jerusalem" featuring a church hewn out of a single rock.

An otherworldly restaurant perched on the edge of a jagged cliff next to a medieval holy city.

Supposedly this Ethiopian chapel holds the Ark of the Covenant, guarded by virgins who cannot leave the building.

Massive stele returned to Ethiopia after 70 years in Rome.

These Nubian pyramids are strange and unique, even by pyramid standards.

This massive redwood tree has a hole in the base big enough to drive through.

A 1920s speakeasy that had rum runners racing up and down the shores of California.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

The tea room that pushed the boundaries of adorable straight into... we can't find the words.